So this is a new one for me, but then I have only built one tesla coil, so the whole hobby is new...
Anyway, I was tearing down my tesla coil, as I had designed it so that I could take it apart to easily transport it if needed. I was carrying the 4.5" diameter secondary with top load attached across the room when I noticed it had a charge on it.. The charge was minimal at first, like if you are building up a static electric charge on something, and then when I was half way into the room it crossed into a "hey.. Ow.. Let's put this coil down on this bench here" level of painful zap..
My best guess is that I was picking up on the magnetic fields that were being put off by all the florescent lighting in the room. Either that or my movement some how built up a static charge.. But has anyone heard of/experienced something like this before.